Unlike a traditional passport book, the passport card is limited in scope but provides some unique advantages. The U.S. Department of State issues passport cards to U.S. citizens.

While a passport book costs $165 for adults and $135 for kids under 16, a card comes to $65 for adults and $50 for kids under 16. Renewal for a book is $130, but is only $30 for a card.

With the Real ID deadline of May 7 fast approaching, Union County Clerk Joanne Rajoppi is highlighting the U.S. Passport Card as an alternative form of official identification. The wallet-sized ...